Sāttvata–Vṛṣṇi–Andhaka Vamśa
Genealogical Enumeration of the Yādava Clans
माद्रवत्या तु जनितावश्विनाविति विश्रुतम् / नकुलः सहदेवश्च रुपसत्त्वगुणान्वितौ
mādravatyā tu janitāvaśvināviti viśrutam / nakulaḥ sahadevaśca rupasattvaguṇānvitau
From Mādrī—so it is renowned—were born Nakula and Sahadeva by the twin Aśvins, endowed with beauty, sattva, and noble virtues.